drivers/media/platform/qcom/venus/pm_helpers.h

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/qcom/venus/pm_helpers.h

Extension

.h

Size

1569 bytes

Lines

67

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: implementation source

Status

source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct device
• struct venus_core
• struct venus_pm_ops
• function venus_pm_load_scale
• function venus_pm_acquire_core
• function venus_pm_release_core

Annotated Snippet

struct venus_pm_ops {
	int (*core_get)(struct venus_core *core);
	void (*core_put)(struct venus_core *core);
	int (*core_power)(struct venus_core *core, int on);

	int (*vdec_get)(struct device *dev);
	void (*vdec_put)(struct device *dev);
	int (*vdec_power)(struct device *dev, int on);

	int (*venc_get)(struct device *dev);
	void (*venc_put)(struct device *dev);
	int (*venc_power)(struct device *dev, int on);

	int (*coreid_power)(struct venus_inst *inst, int on);

	int (*load_scale)(struct venus_inst *inst);
};

const struct venus_pm_ops *venus_pm_get(enum hfi_version version);

static inline int venus_pm_load_scale(struct venus_inst *inst)
{
	struct venus_core *core = inst->core;

	if (!core->pm_ops || !core->pm_ops->load_scale)
		return 0;

	return core->pm_ops->load_scale(inst);
}

static inline int venus_pm_acquire_core(struct venus_inst *inst)
{
	struct venus_core *core = inst->core;
	const struct venus_pm_ops *pm_ops = core->pm_ops;
	int ret = 0;

	if (pm_ops && pm_ops->coreid_power)
		ret = pm_ops->coreid_power(inst, POWER_ON);

	return ret;
}

static inline int venus_pm_release_core(struct venus_inst *inst)
{
	struct venus_core *core = inst->core;
	const struct venus_pm_ops *pm_ops = core->pm_ops;
	int ret = 0;

	if (pm_ops && pm_ops->coreid_power)
		ret = pm_ops->coreid_power(inst, POWER_OFF);

	return ret;
}

#endif

Annotation

• Detected declarations: `struct device`, `struct venus_core`, `struct venus_pm_ops`, `function venus_pm_load_scale`, `function venus_pm_acquire_core`, `function venus_pm_release_core`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source implementation candidate.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.